Digital History http://www.digitalhistory.uh.edu/database/hyper_titles.cfm
A digital history from the early Americans to the present, including an online textbook and interactive timelines.

Historical Thinking Matters http://historicalthinkingmatters.org/
Four student investigations of key topics in American history using primary source documents. The topics are Spanish-Amrican War, Scopes Trial, Social Security & Rosa Parks.

Bill of Rights Institute www.billofrights.org
This site has lots of online resources about the Constitution and the founders. An annotated list of key Supreme Court decisions is arranged chronologically within each topic. Great Constitution Day (September 17) resources, including interactive games for students, founding documents and links to relevant news about current events. They also offer an amazing summer institute for teachers at Mount Vernon every summer.

This Month in History http://www.crf-usa.org/history_calendar/this_month.htm

SCORE (Schools of California Online Resources for Education) http://score.rims.k12.ca.us/
History & social science content aligned with California standards.

European Immigrant Journey - Virtual Museum Field Trip http://score.rims.k12.ca.us/activity/immigrant/

History of Transportation in the U.S. - Virtual Museum http://score.rims.k12.ca.us/activity/foot_to_flight/

People of the Mojave Desert - Virtual Field Trip http://score.rims.k12.ca.us/score_lessons/mojave_desert/

Internet Modern History Sourcebook http://www.fordham.edu/halsall/mod/modsbook.html

Martin Luther King, Jr. and the Power of Nonviolence http://edsitement.neh.gov/view_lesson_plan.asp?id=326

Constitutional Sources Project (ConSource) http://www.consource.org/index.asp
Free, fully-indexed library of constitutional sources. Includes link to lecture by David McCullough on George Washington at http://www.consource.org/index.asp?bid=543&stid=4#DMcCullough.

A Short History of Florida http://fcit.usf.edu/florida/lessons/cur.htm#calusa